Amazon is a terrible place to work for your well-being generally (personal experience and data-based). But, 2 weeks vacation only applies to 1st year employees outside of CA.
Seattle dev: 1st year -> 2 weeks, 2-4th year -> 3 weeks, 5th+ year -> 4 weeks.
California dev: 1st year -> 3 weeks, 2-4th year -> 4 weeks, 5th+ year -> 5 weeks.
Seattle dev: 1st year -> 2 weeks, 2-4th year -> 3 weeks, 5th+ year -> 4 weeks.
California dev: 1st year -> 3 weeks, 2-4th year -> 4 weeks, 5th+ year -> 5 weeks.